I've set that up, I'm just not sure where to check if the service is initialized or not..

After all the fields have been set up, service status will change from Pending to Initialized. You may need to wait a few minutes for the service status to change to Active.
If you are currently under attacks, just update your DNS record (A Record of your web site) to point to the assigned IP, which is proxy server IP. Before you update, you can try it first by updating your local /etc/hosts to point to the proxy server IP.